Boiler-tube cleaner.



KSSiCK, Jn.

(l, DE VLD J.

BOILER TURF HIM-HR.

M'I'MCATION MLU ma.

ZI. ISN..

KISSICK, Jn.

(i. DE Vil) Q j.

BOILEH TUBE CLEANER.

mmc/mon FILED ri. 21. md..

Fn'tented Feb. l2, 1918.

4 SHEE-w-ASHEET 5.

TOR5 I #619 .WWNESSES To all whom 'it mog/.concerm UNITED" STATES Parr-.Nr emes;

Guantes nn vsn AND Joisnruxissicx, in., or NEW YORK, n. Y.

normen-TUBE emanen.

Be itvlrnown'that vv'e, CHARLES DE' Vrin,

residing in the county 'of Bronx, city and State of New. York', and Josera Krss'ron, r., residing in the-borough of Manhattan, clty,

county, :and State o'f- New York, both citif gens of the AUnited States of America, have yointlyinvented certain new and. useful Inlprov'ements in Boiler-Tube Cleaners, of l which the -ollovv'in is aspeclicati'o'n.

.Our invention r' ates to improvements. 1n

means for'A cleaning-boiler tubes .of water` tube boilers, and is anv improvement upon that class'of devices employed for said p urpose wherein a, cleaning -fluid under' pres4 sure, such as 'air o r stein, is discharged emongsuch tubes' for the purpose of cleaning the'n 'of accumulations' of non-combus tible material such as soot, fine' ash,

Our invention has forits object to provid'e I neans whichi'ivill' eectually clean said tubes without preventing the natural draft or .passage of the'g'ases of combustion. A. further object of our invention -is to pro? vide means whereby boiler tubes et vary ing distances from the source of supply of the cleaning Huid lnay vb e cleaned at the saine tim and cleanedl eifectua-lly and' eili- ,ciently. still further object of our -invention4 is to provide ineans whereby the jets of cleaning fluid will 'notinterfere with each other.

Another object of our invention 1s to provide the proper distribution of our nozzles insuring the 1shortest possibletravel 0f the cleaning jets from the distributing pipes to thesurfacesto be 'cleaned'. An-

' other object of our invention i's'the provision for ilexible connections between cornL ponent parts of a. soot cleaningsystem, thus permittln relative movement between' .the-

parts,' an allowing of easein installation.

These and :other objects which will be explained in full as this description proceeds,

are accomplished by the .apparatus 'illus- 'trated .in the .accompanying drawings, land which' constitute desirable *embodiments of our invention- J the 4said drawings,-'

. offF-ig. 1;'

Specicaton of Letters Patent.

'- cleaned, f and this is ou rig. e .isan marges'. ibngiwmai Se@ Patented niet. 12, i918'.

'application nea February '27, i914. serial No. 321,554.

tional .vievr' of one of the` distributing pipes 4illustratin y the several discharge openings therein, W ereby'one of the objects of our invention, to wit,- the pro] ect1on of cleaning jets Yto varying distances may be nccompljshed; i

Fi .4 is a cross-sectional detail taken-on the line 4 4 of Fig. 2;

Fig. 5 illustrates another application of our invention to a Babcock & Wilcox type of boiler, where the design of battling calls .for a horizontal baille in lsome portion ofthe boiler.

Fig. 6 is a cross-section on the line 6 6 ofFig.5; Fig. 7 is an'enlarged detail view illustratin .a flexible connection h etvveen'a distributmg'pipe and; a cross header;

Fig, 8 is a similar view illustratinglai flexible 'connection between c cross header..

and its .inlet p ipe.

Our invention comprises i a f distributing pipe A for the cleaning fluid, which maybe ployed for this purpose, and such distributing pipe we prefer to locate substantially parallel with and next to the tubes of the boilerwhich are. to be .Cleaned In a boilerof the typeillustrated, we prefer to locate the said distributf ing pipes above the tubes to be cleanedan'd lnext to the said tubes, -and by this we mean that the distributing pipes are located next 4to the group of' tubes so that no obstruction is .interposed between the-pipes and the group oftubes which will prevent the 'jets of cleaning Huid from reachin 'the tubes.

cases. might/exist wh rea single Although distributing pipe woultlbe suieient for the purpose of accomplishingl the 'object to *bel attained, it would usually lbe'the case that a plurality of such distributing pipes would -be employed, the number of4 which would depend uponf'the sizeof 'the boiler, number 'of boiler tubes, etc.4 We have illustrated the' outside th menu By tthis: dspo the distributing 4pipe arejenabled to-apply installed boilers without anychange -in 'the arrangement. of the tubes We con-1 ing. pipes between or-in the oi the trastthis'with the 'location ofthedistribut- ,301i di'ii'erent distances- 'bank or decir of tubes, Which location is trou blcscme to provide and involvesa rearrangement of the boiler tubes to .obtainsatis'tactory results. Furthermore, if-such location amidst the deck or benk of tubes involves the substitution ci the distributing pipesfor one of the boiler tubes, a loss of capacity ci' the boiler is a further disadvantage'ivhich we overcome.4 These distributing pipes A are conncctedby suitable means which will be Adescribed in detail with a source otcleaning Iiuid, iro1n"\vhich said l'luid is supplied under pressure to 4the distributingpipes. Frein these distributing pipes the cleaning 'fluid is discharged among the tubes'lto be cleahcd. One ot the parts ci' our invention consists in the openings through which the Said cleaning fluid is iilischarged. As, illustrated in detail View liig. 3, three types of openings are shown, designated respectively fr., o1 and a. The object to be accomplished by these several difi'crent openings is the projection of` the jets ol yleaning' fluid to varying effective distances .from the distrib- 25|iuting pipe. A, so that the effective or cleanfing operation of Vthev Asaidjets shall take place at varying distances 'froin the said fdistributing pipe, thereby enabling each distributing pipe ik to clean boiler` tubes at fromv the said pipe. This 4is accomplished luy-providing openings the bores of v which are variously shapcdiat the -discharge end, which. causes thejets to spread out to a greater or lessextent afs'lthey aredischargcd frein thc distributing pipe. The'opening a is as shown a-pcrforation -th'r-ough the distributing pipe A havinglpari ailel-side walls the. lengthof which is equal to the thickness oi' the pipe A. Thejet-ot cleahsing iiuid discharged through the? said perforation (L will spread out sideuise ini incdiately, as ,illustrated in dot-ted lines in the said figure, and will be adapted to .clean those-boiler' tubes which are'situated.nearest the ldistributing pipe A, by reason of the thel energy in. the cleaning liii'id is l incre or less to the side of the bpeni -lzbendownward. .l boiler tubes .whichare situated bei' yondjihe reach oli, the ict discharged 4froin the openings .cr-fare cleaned bythe jet dis charged through the straight nozzle ,illustrated at of.' This noi/.ale is a' small section of pipehaving a straight bore and'threaded into y r.l ie;. dlstrilouting pipe A.; 'The bore of lzlie'said-iiiozzlc di is considerably longer thanIthe bore ot the opening e and of less diameter, wherebythe 'jet diigscharged there-4 through caused to spread out to a less tentthan that discharged tl'irough the opens ing QQ-,enfltliereby the said ,is caused to eiliectiiely reach and clean boiler tubes sit uated 'beyond those cleaned by the jet from ai, Y

A jet Whicli cerries to a still greater dis- -jet discharged i from the grateI the first pass 'and H Z'the tance is discharged through an expansion nozzle a2, which is a small nozzle threaded into the distributing pipe A and having an annular bore preferably o'f less diameter than the boreof the nozzle a1. The said noz- Zie flares outwardly toward its delivery or discharge end, as indicated' in Fig. 3, whereby the jet discharged therefrom is expanded by having its pressure hea-d converted to velocity hea'd and the increased projective f .orce thereby obtained causes the jet to be projected to a greater effective distance. By proper formation oir' the discharge nozzle a the designer may Within limits mold the therefrom -in almost any degree to' allow ol desired,;ldispersion down ward and'sideivise of saidfjet. Ve have illustrated in Fig. 3 the employment. of three differenttypes'of discharge openings adapt ed to dischaige jets to three ditiierent cfi'ective distances, but the nuinber of varying discharge openings is shown illustratirely i'nerely, as our invention is not necessarily concerned with the provision of three such types of openings. Ve believe, however, that this will be foundto be a desirable number. f

The points of discharge are as shown at varying distances from the distributing pipel ,wherebyflthe progection of the cleaning fluid lto varyii'ig-distances is assisted.

We have illustratedourinvention in c'on'- nection Viviltl'i p Babcoclr Wilcoirfivater tube, boiler, eilthough itis not'n'ecessarily,limited extensively employed. In'-,Fig.'j1"is .illus trated 'a boiler of such' .'typeivherein the tubes; B are inclined und are {connectfsdY 'to headers G Ci. The gases'of combustion pass D through `a path indicatori by arrows between the said headers and the baffies E F and bridgeiifall- G. n'tliis type of Aboiler we believe the tubes'vvill be effectively cleaned by the farrangein'ent of l,distributing pipes illustrated in lifigs.v land 2. .This type. of -bo iler has severaljpjasscs. for the gases DQBI, and We have chosen this as atyp'e et boiler of combustion' whichjiveliave respectively lettered H, H1, iand 'being' f last pass, H1 being the intermediate pass. Our inventionprof" vides selective means Whe'rel'iy in "a boiler havingseveral passes the tubes'injeach .pass may be cleaned asidesired, .and it further provides means wl'ier'eby'n portion of the tubes in each pass 'may be Ycleaned at theY saine time, and these selective means are iinpo'rtant in that they enable cleaning of the tubes to t,

rmturaldratt, which effectively carries oi' Cro on Without-interference with the'f- 12Tv the matter dislodged from the tubesxand enables the boiler tocontinue in service dur-.-

ing the clcaliing opera-tion. our i invention provides means whereby-iii' vdesired tubes may Vloe-cleaned throughout theirv Accordingly i;

entiredlengthin the various sections without preventi'g'thepassage of the gases of combustion,l or a desired number of tubes may :be cleaned in one section without pre venting sch passage and adjacent sections may be .cleaned later.

In Fig. 2 we have illustrated in plan view a desirable arrangement of the cleanin pipes for the Babcock & Wilcox boiler o' the type illustrated in Fig. l. Here the distributing pipes A are'4 illustrated as arranged in four groups which are designated respectively AEA,- A, A4, and the pipes in each group: are' connected to respective cross headers 1 1-1, I2, 1?-- which are supplied with cross header Itherega-re connected three disfc- 1an- -cie essere 'the upper Side' 0f the Pass viewed indiig. I2. To lthe header I1 rettched'four distributing pipes A2 adapted to clean the tu es on the .fthe passin said ligure. There v i iis'`t1','iln'it1ng`vv pipes A3 connected to croSS hea/der 12, and fthree distributing esAi-.c'onnectdi tothe cross header I lwhichareldapted' tofclean 'the tubes on the 11p-PQ and side'of the said pass respeclivel "-Ea esedistributing'pipes is preferably-*provi with discharge openings as I 'described wliihwill: project the jets of les i tributin in each; distributing' pipe for the cleanslng -guidare;obhquely arranged with reference t th o4 that 'the discharge openings in each i 4di"sichargge pipe may direct the jet of clean- -ingiiuid' throughs. clear path formed bei tween theboiler tubes from the upper to the 5 0.-

lowei'part. :The-'jets discharged from the 'various openingsin Veach pipe are preferably discharged in the saine direction, so that {Itho-'said jets will be 'discharged in the same '-1 clear space' between the tubes, whereby inter ference between the jets'is prevented and 4the pipes are!eiectively1-cleaned. The disny i satanria its@ scharg `f sets 'of tubes 'between the saidjets, andthe said. matter iseairied u by the natural draft of thegases of com ustion, which at dejwall's' 'of the boiler casing. This.

edinthefsanib'direo- .j tion, asfor 1-instance" through the-"several y paths K, dislodge 'the matter from-the two that time pass up through the parallel paths K1. Thereby it is possible if desired to direct the jets in the direction of the paths K upon all boiler tubes in a pass at the same time, and the dral't will. continue through the paths K1. It will be observed that the distributing pipes' are illustratedl as located in pairs, each-pair being situated above a boiler tube, and that the openings in the pipes in each pair diverge, whereby those pipes which have their openings arranged in a direction oblique to those already described will direct their jets through the paths or clear spaces between ,the boiler tubes in a direction to intersect the jets from those described. Theseintersecting jets follow the paths L as indicated in Fig. 4, and the, parallel 4clear spaces-L1 between 'the parallel paths L provide for the desired continuance of a natural draft.

It will be seen from the foregoing that the illustrated arrangement of jets provides that a tube is exposed to the cleaning actionof two jets whereby it is thoroughly cleaned from all deposited matter, and that with theusual arrangement of tubes a. majority of the boiler tubes are so treated.

The middle pass H1 illustrates theeinploy ment of two series or groups of distributing pipes each of which is connected to its own cross header, whereby all thedistributing pipes in each group are ls iniultaneously supplied with cleaning fiuid.-jThe two groups are respectively lett/eredita.l A? and are respectively connected to cross heufdersll I 4which are supplied with cleaning fluid through feed pipes J'J". lThe'operation of the pipesin the middle pass is the same as those in tlefrstpass, and they' are simi larly'consj", ucted and direct their jets' in a similar manner, anddiii'er from those previously escribd only' in that they are illus.-

'trated f divided into. two group s ,which direct their jetsalong intersecting-paths, .but i which groups' are not subdivided', as 'in' the first pass'. The distributing pipesin the last pass H? are similarly arranged to those'in the middle pass.

Means are provided whereby each group of pipes may be separately 'supplied-with of stop valves M with which eachfeed pipe is provided, and wherebyv the passage of cleaning Huid from the main supply pipe N may be controlled. lWf-here'gs team 1s used as :saudi distributing" pipes arelfeft full I oj steam` upon; condensation: forms 'f a l,partial 'vacuum in the feed pipe," cross header; an

subject to corrosion. Tov prevent this we preferably employ a. small air vent en which 115 cleaning liu-id, and such neans take the form the cleaning fluid, .upon the shutting-'down of any of lthe stop valves ;M, the feedpipe distributing pipe, thus sucking in furnace gases and causing the formation of acid. with the condensate, whereby the fpipes' are.

and are therefore not illustrated nor de,

scribed in detail.

It will be observed that the control valves M are located outside of the-casing where they are accessible to the firemen.

A type of boiler frequently employed is illustrated in Figs. 5 and 6 which varies from that previously illustrated in that, be

-cause of a variation in designof boiler, the

grate D1 is situated at the lower .ends of the boiler, and a portion oli thc boiler contains a horizontal baille Q. As the gases of combustion make a sharp turn at the baille Q, a large amount of soot and ash are thrown down and accumulate on this baille, and the problem of removing it becomes very diiiicult. In this case we may prefer to employ in addition to the distributing 'pipes arranged parallel to the boiler-tubes, further distributing pipes extending transversely of thetubes, and adapted to project their jets in \'arying-.directions`, and such pipes we believe are particularly desirable for Athe last pass because of the mecha-,sisal diliiculties which may prevent the introductionof other methods of carrying and4 supplying stein j ets. fFor it will be obvious that to discharge jets directly downon'a horizontal baille may cause the soot and ash to accumulate there, and accordingly we have illussuch result. W'e have illustrated the last pass. as being provided withl feed pipes R,

` R1, R2, each having its own controlling valve jetseiectiijely'dislodge the deposited'rnatter which leads Ito distributing re arranged transversely of nd are perforated ,for the discharge-ofthe leaning fluid. The perforations in the pipes preferably open along M, and each of oblique` lines iii-each pipe so thaleach pipe A to discharge jets iu. diHerent is adapted asl indicated by Fig. 5, and these directions,

from the pipes which they reach. The provision of a pluralityr olj'siihpipes enables us to clean less' than the: Whole ofgthe boiler tubes in the ast pass-at the same time. It wil i be obser, ed that nach @of -the feed pipes R, 1,' R2 is provided with a number of the .transverse distributing. pipes S' to enable the cleaning of alll the tubes in this pass. The pipe It provides a series of transversely arranged distributing pipes S S1, the upper' one 'of which St extends across the tubes and is arranged so that it will discharge' jets tions are liable'to occur in the lower part may employ metal nozzles T as shown to aid cleaning tratedin Figs. 5 and 6 means -'or preventing parallel with the tubes, as indicated by the arrows. The first and middle passes are provided With distributing pipes parallelto the tubesyas indicatedin Fig. 1. The middle pass, is also provided with a transversely arranged distributingpipe S2 similar to the pipes'S but having its opening adapted to project jets of cleaning fluid as illustrated by dotted lines in said figure, so that the baille .Q will be cleaned and the opening from the middle to the last pass will likewise be cleaned;

There may be some cases' where accumulaof the lirst pass H, which cannot be removed by 4the parallel distributing pipes, and in such cases, generally in boilers where the tubes are-spaced in two horizontal banks with an intervening space between equal generally to about 12 to 16, such boilers being known as double-deolred boilers, we

in cleaning such tubes, and these nozzles are adapted to direct their jets transversely across said tubes, as illustrated by the arrows in Figli; if desired the discharge openings in the nozzles T may be similarly arranged to the-discharge opening of Fig. 3, so as to clean the tubes at varying disl ances -from the side wall. l 4

A possible additionlo our invention is illustrated in Fig. 5` and in cross section in l ig. 6, and consists of a rotatable distributing pipe V which extends transversely of the superheater "W and is rotated by a sprocket chain 'v gearing in sprocket wheels ful v2 suit-ably turned; Pipe V has discharge openings for lel aning duid which is supplied through te d pipe Y". By this means the tubes of tic superlieater are effectively cleaned.

l'Ve haveliulso in connection with our .invention illustrated means whcrebya varia tion in posiliion or change of position of the parts may lie compensated ilior, and this is accoini'ilished as. between the cross headers and vthe toed pipes b v liexible comu-minions;

between the same. ln Fig. 2 at X -we'have' illustrated af looped pipe which furnishes a flexible errinlvtum between Vthe cross header lfc andgits attached distributing pipes Ah These `are illustrated iu detail `iu Fig'. 7. Such leXible epnnccl'ion providesl lior'uny 'relative expansion or contraction of the connected partsaud likewise for any inc-quality 'in fitting. 'The connection belween theloop X and the dstributii'ig pipe isa simple pipe fitting connection-i Between the. loop X'and Vthe cross header IE, however, we prefer to provide a swivel connection which will permit of theloop X being turnedto aceommodale varying distances otconnectionl to the distributing pipe. lt is illustrated as turned to a slght'extent in Fig. To pro vide such connection and at the saine 'time preserve a tight joint, the loop X screws into a saddle Y and is held by a. jam-nut 'y in adjusted pos ion` and a bracket g/l passes around the cross header 'Fl and through per- .i 'oraed ears `ifl in the saddle, andl is held there by nuts, and a gas-liet y? is interposed between the pij and corresponding hole. in the cross header to tighten the joint. To

:ide against any relative incitement be- P lo tif-een the boiler and the setting and to .2O which is employed-111 the middle pass and the last p( ss et' lfig. 2. This connection enables the distributing pipes to be easily removed. it provides a tight joint and like wise permits the distributing pipe to be rotated or turned up and down to proper position. f i

l his is 'somewhat similar to the connection between the ldistrxbnting pipe and the cross header previously described, and 'comprises a saddle Y1 int-o which the distribse ating; pipe screwed and heid by jam-nutv. anal which is attached to thecross header im ny loop y which passes through perfofated ears in tl'ieszuldie Y1 and is there held by nutsz .fr similar ggf-.reitet tween the openings in the res" ctii-'e pipes.

i Fini illustrates (linnn n distributing` 'pipes Si which are prm'idcd to lill the :l es in ihe brackets :U2 by which the distriinning pipes are attached to oros; supports .\r". and enable a. stock bracket to be used. boiler tubes l5 and through tht` supports A -where they are iuicl by nuts (Fig. ii).

'finlinrarntion has been shown connected in. to the inibz-.ur 'r Sr 'iig'ilri'ix boiler wherein '.he ati-ani genes led jin the water tubes is col- .icctvd in lthe. strain drains li in the usual inanner, but shelf-typeoi' boiler is not essential' to the mnjiioyniein. ot our intention, die swine can obviously by the exercise of shui o1l` the-calling be ulapted by any lcapable. engineer Ito other types .of boilers sinrh as the'ltn., natur-'tube boiler in use.

V(lu-2. ot' the objects oi our invention is tate-.i to no that of producing a cleaning wir wherein nach el.

attest possible distance. 'trom its ission; to the sln'i'aces to be nerf.. "this object is accomplished by us eating our discharge openings, nozzles, je s, etc., in the distributing` pipe so that the ids' 'are di iai-ged at ri'g'fbt. angie-s to the "longitudinal airis nt the distributing-pipe.

' 6?; "heiaiby it will be, perceii-'ed that each jet (')thor inf-achete. lil pass around theoi' the itiriing or any other traverses the shortest possible distance tothe surfaces to be cleaned. This arrangement we contrast with an anglcd'disposition of the discharge orilices whereby the jet is dis charged at an angle less than an angle of 70 ninety degrees to the longitudinal axis of the distributing pipe., and accordingly i trarerscs a greater distance to reach the surit'aces to be cleaned than is the ease lwith our l invention. By means thereof a greater elii- 75 ciency is secured by our invention. We do notintend to limit ourselves to an arrangement whereby this precise angle of discharge is present, as there may be cases where other arrangements are necessary. But this is our gg preferred forni, and one which we find most etiicent.

It is essential to the proper cleaning of a boiler that the draft should not be interfered with and on the contrary should be 35 maintained, not only for the continuance in service of the boiler, but likewise that the dislodged matter may be properly carried oil', and it will therefore be apparent that our invention. by preventing interference on with the draft during the blowingeperation; by discharging the jets through the shortest possible distance and by cleaning the completel length or' a tube in a pass at onetime .secures a great, increase in heating, 95. -eiticienoy and thereby accomplishes an advance. over an arrangement whereby the iets are angled with retereneel to the longitudinal axis oit' the boiler tubes, so that crery' part of the clear `njas spacein a'pass ot' the ion boiler is reached, by which means it will vhe apparent the draft is not onlyrestricted but 'the cleaning operation is rendered ineiiec; ,tu-al. .i

'The 'particular openings in the distribut- 105 ing pipes which are provided touthe discharge of the cleaning` fluid -are tor the purpose of enabling said cleaning I'iuidto be discharged at varying eiieetive or' marking; distano. iiith the types" iiiustrnzed it is 11u apparent. that the cleaning energy of said liuid is dispersed sidcwisc and. downward in. wal-ying;v degrees; Modiiimrtions .of thc pan' ticuiarfdischarge openings shown lnay be made to produce the particular kind nt' jet l'ls` desired hy the engineer in any boiler and such nwditications are esteemed' hy us. n'ithin the iuiunds ot nur invention. A

ln the a'econ'ipaiiyine` drawings "e'have illustrated the appiieatifni olfourinrention 32o to' a boiler inn-"mg,` a single, bank' or deci: ol tubes. Boilers hare. been made. havingy more than one set or banir at tubes supcrposedI` and in such cases our invention can be ein l pioyed as weil as with thc'single bank or 125 doch illustrated. r.ihc employment-ot' .the invention in such an instailatibn would involve a4 substantial duplication-ot that ilh|strated, and in such cases the distrilnltingz,A pipes for the lower baul; would be located 130 between the several banlrs or groups ot tubes and entirely outside ot' the banltor group of tubes controlled by suoli pipes.

We do not regard our invention as being necessarily limited to the particular' arrangement of distributing pipes illustrated inthe drawings, as it will be apparent that the boiler designer may group these so as to clean various parts of the tubes at his option. There may be any number otgroups, and they may be changed with rete-rence lto the diagonal spaces between the tubes 1n some classes of boilers` or by reason of a different variety of b'oiler header. The loregoing in addition-to otherI changes in construction and arrangement of the parts Within the limits of the appended claims, are Within our invention.

We claim as our invention l l. In an apparatus or' the character de-v scribed, the Combination with a water tube boiler having a plurality ot boiler tubes nl a cleaning system comprising a plurality o't stationary distributing pipes located next the boiler tubes and substantially parallel therewith and one or more distributing pipe-s carried across the boiler at an angle lo the boiler tubes.`

2. In an apparatus of the character described, the combination with a water tube boiler having a plurality of boiler tubesl ot' a cleaning system comprising a plurality of stationary distributing pipes ,located next. the boiler tubes and substantially parallel therewith and one or more distributing pipes carried across the boiler at an angle to the boiler tubes, said lastme'ntioned distributing pipes being providedfwith leide openings to direct the jet-s of cleaning iuid between th'e boiler tubes,

3. In an "apparatus of the character described, the `combination with a water tube. boiler having a plurality'of boiler tubes of a cleaning systenrcomprising a plurality ot stationary.listrilfting pipes located substantially parallel to the, boiler tubes and a rotatable distributing pipe carried across theboiler, and provided with nozzles to direct the jets ofcleaining fluid, and means for rotating said pipe.

4;. In an apparatus of thaelnuacter described, the combination with a water tube boiler having a plurality ot boiler tubes ot a cleaning system comprising a plurality ot "4 stationary distributing pipes located sub-- stantially parallel to the boiler tubes, perforateddistributing pipes carried across the boiler setting at an angle to the boiler tubes, one of said distributing pipesbcing rotatable and means 'for rotating said pipe.

5. In an apparatus of the character de-" `scribed, the combination with a water-tube boiler having a plurality of boiler tubes of a cleaning system comprising a plurality of stationary distributing pipes located substantially arallel to the boiler tubes, nozzles carried by the distributing pipes, and said distributing pipes having perforations, the whole so disposed that the cleaning fluid may be discharged into the entire length ol the clear space between two adjacent sets of boiler tubes in one pass at an oblique angle to thc outside Wall of the boiler setting at onetime, cleaning the entire length of adjacent sets of boiler tubes in said pass at one time, the nozzles in adjacent distributing pipes being inclined relatively to each other, aud/the perforations being similarly disposed whereby the discharge of cleaning fluid from one distributing pipe isalong lines adapted to intersect the line of discharge of cleaning tluid 4from an adjacent distributing pipe` means forconveying the cleaning fluid under pressure to the distribating pipes z nd means outside the boiler i'or controlling the distribution of the cleaning {luid among the distributing pipes.

(i, A distributing pipe for cleaning fluid haring openings tor the discharge of cleaning fluid, the bores of said respective openings having walls, the axial inclinations of which in the parts thereof leading to the discharge end vary in the different openings in a distributing pipe whereby the said respective openings are adapted to direct the cleaning fluid to different effective distances troni the distributing pipe.

T. In an apparatus of the character described. the combination with a Water tube boiler haring a plurality of boiler tubes of a cleaning system comprising a plurality ol distributing pipes arranged substantially parallel to the boiler tubes, and means for supporting the distributing pipes`in pairs above the boiler tubes in such manner that a pair of distributing pipes is located above one boiler tube.

8. In an apparatus of the character des scribed, the combination with a water tube boiler havinnV a plurality of boiler tubes of a leaning system comprising distributing pipes arranged substantially parallel with the boiler tubes, a. nozzle set in thc'boiler setting terminating at or near the inside ot' the boiler setting, means for conveying tbc cleaning fluid under pressure tothe distributing pipes and nozzle and means outside the boiler for controlling the distribution of the cleaning [luid between the distributing pipes and nozzle.

n. ln an apparatus of the character described, the combination with a water tube boiler haring a plurality ot boiler tubes, of a cleaning system comprising a plurality of distributing pipes approximately parallel with the boiler tubes, a. cross header adapted to supply a cleaning fluid under pressure to a plurality of said distributing pipes, means for conveying the cleaning Huid under pressure to the cross header, means outside the Sli ' matie air relief apparatus outside the boiler to admit a protective stream oi air into tlul cross header.

10. I-n an apparatus of the character described, the combination Iwith a water tube boiler. having a pluralitI ofboiler tubes, of a cleaning system comprising a plurality ol distributing pipes arranged substantially parallel with .the beilertubes, a cross header 'adapted to supply' a cleaning iluid under pressure to a pluralityof said distributing pipes, and a flexible connection between'the distributing pipesl and the cross header alloiyingv adjnstincntof the distributing pipes 1n relation to the cross'header.

i 1'1. In an apparatus of the character described, the combination with a Water tube Iboiler having a plurality of boiler, tubes, of a cleaning system comprisinga plurality ot distributing pipes substantially parallel with the boiler' tubes, a cross header adapted to supply a cleaning iiuid under'pi'essure to a plurality of said distributing pipes, means for conveying the cleaning fluid under pressure to the cross header, and means outside the boiler to regulate the supply of cleaning 4fluid to the cross header. Y

l2. In an apparatus of the character described, the combination with awa-ter tube boiler having a plurality of boiler tubes, of 'a cleaning system comprising a plurality of distributing pipesin each pass, said pipes extending approximately parallel With'the boiler tubes, andaLplur-ality of cross headers l in a pass adaptedto convey1 :1 cleaning Huid under pressure to the distributing pipes, each or' said-cross headers being connected to a part 0i' the'distributing pipes in a pass anduneans whereby the cleansing fluid may be supplied to each cross header as desired, whereby part oi the tubes in each pass niaiy be cleaned simultaneously and the iree passage of the gases .ol' conibustion may be permitted between thc remaining tubes *13. ln au almaratus ol' the character-described, the conibiiuitiou u'ith a water tube bi ilcr; having and ai cleaning system comprising sectional. mean-s insidetle boilersettilig for distributing the olea-ning fluid under pressure over ltho-sui-:tace to' be. cleaned, iueans outside the boiler sett-Ingi'or.controlling the distril'ni'tion ot the eleaning'llnid under pres-l sure-'to the -i-'arioussections 'ol' the appai ratus inside Athe boiler setting as desired'. and flexible means for connecting the parts of the system inside the boiler setting to thc parts o't the s ijsteni outside the boiler setting. l lhln a. water tube boiler having4 a plurality of boiler tubes and having. the path for the products of combustion divided into 'a plurality ot'. boiler tubes' passes by baille plates and boiler headers, means for cleaning the boiler tubespcornprising a pluralit)I of distributing pipes in a pass, said pipes located substantially parallel with the discharge openings, said distributing pipes being divided into `groups 'in a pass, and ine-ans for supplying the 'respective groups with cleaning {luidas desired, whereby a part ot' the tubes in a pass inay be cleaned at a time without interference with the i draft.

boiler tubes, and having 15. In a boiler having a plurality of'ivater tubes-jnovided with partitions for providing a plurality of passes for the gases oit combustion, means 'for cleaning said tubes comprising a plurality oi' :tlistributing pipes in each pass, said pipes located substanltially parallel with the tubes and having discharge openings, a. cross header for the distributing pipes in each pass, and nie-ans for supplying cleaning fluid toeach cross header.

1G. ln a boiler having a plurality of water tubes provided with partitions :for providing a plurality et passes for the gases ot roinliustion, lneuns i'ior cleaning said tubes comprising a pluralitj\ oi' distributing pipes in cach pass, said pipes' located substantially parallel wit-lr the tubes and ll'iaving dis 'charge openings, the distributing pipes in each pass being separated into groups, a cross houder for the distributing pipes iueacli group, and means forsupplying cleanin a fluid to each cross header.

l ll u lT; ln a boiler hui ing a. plurality of vater tubes provided with partitions for providing a pluralityY of passes iler the gases of. coiulnistion, ni'cuns ifor cleaning said tubes comprising distributing pipes located substantially parallel with. the tuber` and hay ing discharge opei'iings, the distributing pipes 'iu-'each pass being` separated into groups, the ol'icnings in each pipe oit a group ot' pipes directed in .the saine direction and obliqurlyv io the side wall ot the boiler setl ling, und the other pipes in said group ol" pipes provided with corresponding ope-ninps but. :ulapted-to direct jets along lines which intersect group. and liu-:ins 'for lsupplying eleanii'ig Huid li'i-earhgroup ot pipes separately.

11S. lu u boiler hai-'ing a plurality of 'Water tubes provided with partitions for proViding a plurality ot passes for the gases 'of combustion. 'inea-ns for cleaning said tubes comprising stantially parallel with the tubes andlhavdischarge openings. the vdistributing pipes in each pass being separat-ed by -those ci the first-named lll) distributing pipes located 'subthe pipes in another group and the respective pipes in eaohgroup located adjacent alternate boiler tubes, and means for supplying cleaningluid to each cross header.

, 19. In awater tube boilerl having a pluralit of boiler tubes, a cleaning `Pipe locate substantially parallel to the boiler tubes, having openings for the discharge of `cleaning fluid comprising nozzles; different nozzles in a pip'e adapted to project jets of. cleaning fluid to different distances, whereby tubes at diil'erent distances from the same' distributing pipe may be simultaiieously` cleaned.

20. In a water tube boiler having a plural- 'ity of boiler tubes, a plurality oi. cleaning pipes located substantially parallel to the boiler tubes, having openings for the discharge of cleaning fluid, comprising nozzles, diil'crent nozzles' in a pipe adapted to project jets of cleaning fluid todiillerent distances `vhereby tubes at different distances from the same distributing pipe may be simnltane ously cleaned, and said nozzles adapted to project saidjets through the clear space formed between adjacent rows of tubes.

21. Ih a Water tube boiler having a plurality of boiler tubes, a plurality of cleaning pipes located substantially parallel to the boiler tubes, having openings for the discharge of cleaning iiuid, comprising nozzles and perforations adapted to project jets of cleaning fluid to varying distances, whereby ,tubes at Vdiferent distances from the saine distributin pipe may be simultaneously cleaned anc the nozzles and perforations in `each distributing pipe adapted to project their jets through the saine clear space and the jets from adjacent pipes being projected along intersecting lines. y

22'. In combination a boiler having water tubes arranged in rows, and ineans for cleaning said tubes, comprising a distributing tributing pipe for the cleaning fluid, said pipes having discharge openings having their delivery ends at varying distances freni' said pipe whereby the jets are caused to project to varying eifective distances l'roin said pipe.

2a. In a boiler having water tubes, means for cleaning said tubes comprising a dis tributing pipe 'for the cleaning iiuidydis- .charge nozzles in said pipe having their bores near the ,delivery end of diderent the lines of jets discharged from other pipes.

' 26. In an apparatus of the character described, the combination with a Water tube boiler having a plurality of tubes of means forcleaning the tubes comprising a plurality of distributing pipes located substantiallyv parallel with the said tubes, each of said pipes having perforations fdr the discharge of cleaning fluid, ard the said perforations adapted to discharge jets along intersecting lines, and said distributing pipes each extending throughout the heating length of a tube ,in a pass.

27. In an apparatus of the character-described, the combination with a Water tube boiler having a plurality of tubes, of'means for cleaningthe tubes comprising a plurality of distributing pipes located substantially parallel with the said tubes, each of said pipes having perforations for the discharge of cleaning fluid, and the said perforations adapted t0 discharge jets along in tersecting lines, and `said distributing pipes each" extending throughout. the heating length of a tube in a pass and means whereby a portion only of the distributing pipes in cach pass may be supplied with cleaning fluid at one time.

28. In a boiler having a plurality of water tubes staggered relatively to one another whereby clear spaces are formed between diagonal lilies of tubes in each direction, means for cleaning said tubes comprising distributing pipes substantially parallel with said tubes and located in pairs substantially above `alterinite tubes, each pipe havino' discharge openings obliquely arranged reliil'vc to a Vertical line, whereby each pipe is adapted to direct its jets-through alternate clear spaces, and the Iinteri'n'cdiate Clear spaces permit the draft to continue.`

In Witness whereof, we have hereunto signed our names in the presence of two sub scribing Witnesses.

. l CHARLES DE VED. JOSETH KISSICK, Ju. Witnesses:

HENRY M. T Uiur, FRED WHITE.

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